/Engine/Source/Runtime/Engine/Classes/Animation/AnimData/IAnimationDataController.h
Adds a new curve with the provided information. Broadcasts a EAnimDataModelNotifyType::CurveAdded notify if successful.
Whether or not the curve was successfully added
bool AddCurve ( const [FAnimationCurveIdentifier](API\Runtime\Engine\Animation\AnimData\FAnimationCurveIdentifier) & CurveId, int32 CurveFlags, bool bShouldTransact )